Detector, imaging method and storage medium

Abstract

The present application relates to a detector, an imaging method, and a storage medium. The detector includes a plurality of detection regions and a plurality of signal readout circuits. Each of the detection regions includes a plurality of detection sub-regions. The plurality of signal readout circuits are in one-to-one correspondence with the detection regions respectively, each of the signal readout circuits includes a plurality of signal readout sub-circuits, and the plurality of signal readout sub-circuits are in one-to-one correspondence with the plurality of detection sub-regions respectively.

What is claimed is: 
     
         1 . A detector, comprising:
 a plurality of detection regions, each of the detection regions comprising a plurality of detection sub-regions; and   a plurality of signal readout circuits, the plurality of signal readout circuits being in one-to-one correspondence with the corresponding detection regions respectively, each of the signal readout circuits comprising a plurality of signal readout sub-circuits, and the plurality of signal readout sub-circuits being in one-to-one correspondence with the plurality of detection sub-regions respectively.   
     
     
         2 . The detector according to  claim 1 , wherein at least two detection regions have different pixel attribute parameters. 
     
     
         3 . The detector according to  claim 2 , wherein the pixel attribute parameters comprise at least one of a type, resolution, collection speed, and material of the detector. 
     
     
         4 . The detector according to  claim 2 , wherein the pixel attribute parameters of a preset region in the detection region of the detector are higher than those of other regions in the detection region of the detector. 
     
     
         5 . The detector according to  claim 4 , wherein the preset region is a central part of the detector. 
     
     
         6 . The detector according to  claim 1 , wherein at least two signal readout circuits have different attribute parameters. 
     
     
         7 . The detector according to  claim 6 , wherein the attribute parameter of the signal readout circuit comprises at least one of an element type and material of the signal readout circuit. 
     
     
         8 . The detector according to  claim 1 , wherein the detection region is parallel to a corresponding tomographic reconstruction plane of a scanning device. 
     
     
         9 . The detector according to  claim 1 , wherein the plurality of signal readout circuits are arranged on a plurality of circuit layers of the same circuit board respectively. 
     
     
         10 . The detector according to  claim 8 , wherein the plurality of circuit layers are controlled independently of each other. 
     
     
         11 . The detector according to  claim 1 , wherein the signal readout circuit comprises: a gate switch control circuit, the gate switch control circuit being configured to turn on a target pixel in the detection region by outputting a gating signal corresponding to the target pixel. 
     
     
         12 . The detector according to  claim 11 , wherein the signal readout sub-circuit is configured to acquire an output signal of the detection sub-region corresponding to the target pixel under the condition that the target pixel is turned on. 
     
     
         13 . The detector according to  claim 1 , wherein the detection sub-region is a region obtained by dividing a plurality of pixels in the detection region according to a preset dividing manner, and the preset dividing manner comprises a pixel row dividing manner, a pixel column dividing manner, or a pixel block dividing manner. 
     
     
         14 . The detector according to  claim 11 , wherein each of the signal readout sub-circuits comprises an amplifying circuit and a signal conversion circuit;
 the amplifying circuit is configured to amplify a first signal of the target pixel and send the first signal to the signal conversion circuit; and   the signal conversion circuit is configured to obtain an output signal corresponding to the target pixel according to the first signal.   
     
     
         15 . The detector according to  claim 1 , wherein each of the plurality of detection regions is a region formed by partial of pixels of the detector in a row direction and/or a column direction. 
     
     
         16 . An imaging method, comprising:
 acquiring output signals corresponding to a plurality of signal readout circuits in a detector; and   generating image data from the output signals corresponding to the plurality of signal readout circuits;   wherein the plurality of signal readout circuits are in one-to-one correspondence with a plurality of detection regions in the detector respectively; each of the detection regions comprises a plurality of detection sub-regions; and each of the signal readout circuits comprises a plurality of signal readout sub-circuits, and the plurality of signal readout sub-circuits are in one-to-one correspondence with the plurality of detection sub-regions respectively.   
     
     
         17 . The imaging method according to  claim 16 , further comprising:
 analyzing at least two output signals in the output signals corresponding to the plurality of signal readout circuits to obtain an analysis result; a time difference value between acquisition times of any two output signals in the at least two output signals being smaller than a preset difference value.   
     
     
         18 . The imaging method according to  claim 16 , wherein generating the image data from the output signals corresponding to the plurality of signal readout circuits comprises:
 generating the image data according to the output signals and gating signals corresponding to the plurality of signal readout circuits;   wherein the gating signal and the output signal of the same pixel have a matching relationship.   
     
     
         19 . The imaging method according to  claim 17 , wherein the preset difference value is a value close to 0. 
     
     
         20 . A non-transitory computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the imaging method according to  claim 16 .